n (1)口，嘴(opening of the body through which an animal or human being takes in food and by which sounds are made)[C，U]：open/close/shut one's～张/闭/闭口;a big/tight/foul～嘴不严/嘴巴紧/嘴不干净;get/put sth in one's～吃东西;The dog seized the bone in his～.狗用嘴叼着骨头。talk with one's～full (with food in one's～) 嘴里吃着东西讲话;

(2)出(入)口(opening，entrance of a bottle，cave，river，etc)[C]：the～of a bottle/jar/well /cannon /cave /volcano 瓶/罐/井/炮/洞/火山口;The river deposited soil at its～.河水把淤泥沉积在河口。〖同〗entrance，opening;

(3)要供养的人(指儿童，老人)(person as consumer of food)[C]：have three～s to feed要供养三口人;

(4)空话，无聊的话(meaningless talk)[U](infml)(derog)：all～no action 光说不干;

→′mouthful n 一口，一满口(的量);′mouth-organ n口琴;′mouthpiece(乐器等)吹口;͵mouth-to-′mouth adj 口对口呼吸(指人工呼吸);′mouthwash n 漱口液(药);′mouthwatering adj 令人垂涎的，诱人的;

v (1)言不由衷，不知所云(say sth without understanding or insincerety)[Tn](derog)：～speeches/opinions/pompous truisms 装腔作势地讲话/言不由衷的说教/讲大道理;listening to sb～ing excuses 听某人编造借口;〖同〗pronounce;

(2)不出声，用口型默示(form a word with the mouth without making any sound)[I，T+n]：～the words to sb 向某人不出声地说这些话;She～ed the word “No”. 她用口型默示“不”。He～ed“Water?”他默示的是“水”? The singers are only～ing words.这些歌手只是在对口型。～curses 不出声地咒骂